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Swash and Backwash

Swash is when the water of the sea moves up the beach/land. Backwash is when the water of the sea moves away from the beach/sand.
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Waves going back and fourth.
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I'm not too sure, but swash and backwash are to do with waves (swash going in and backwash going out) and hydraulic action is to do with water getting into rocks and expanding them...
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Swash is when the waves comes towards the beach/land. Backwash is the opposite - it moves away from the beach/land.
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a constructive wave.
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Swash and Backwash

Swash and backwash - BBC
A look at waves: wave formation, swash and backwash, constructive and destructive waves. Aimed at pupils studying the Coastal Landscapes topic in ...
www.bbc.co.uk
BBC - GCSE Bitesize: The action of waves
Then the water runs back down the beach - this is called the backwash. With a constructive wave, the swash is stronger than the backwash. With a destructive ...
www.bbc.co.uk
Swash - Wikipedia, the free encyclopedia
[edit]. Swash consists of two phases: uprush (onshore flow) and backwash ( offshore flow). Generally uprush velocities are ...
en.wikipedia.org
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